Cisco 12000 - Series Chassis Modular Expansion... Guide

Corporate Headquarters:
Copyright © 2011 Cisco Systems, Inc. All rights reserved.
Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Cisco 12000 Series Router
Memory Replacement Instructions
Product Numbers: MEM-GRP/LC-64=, MEM-DFT-GRP/LC-128, MEM-GRP/LC-128=, MEM-GRP/LC-256=,
MEM-GRP-256=, MEM-GRP-512=, MEM-LC-PKT-64=, MEM-LC-PKT-128=, MEM-LC1-PKT-256=,
MEM-PKT-512-UPG=, MEM-PRP-512=, MEM-PRP-1G=, MEM-LC-ISE-512=, MEM-LC-ISE-512A=, MEM-LC-ISE-1G=
Document Order Number: DOC-784338=
This publication describes procedures for upgrading or replacing memory on the Cisco 12000 Series
Router Gigabit Route Processor (GRP), Performance Route Processor (PRP), and
Cisco 12000 Series Internet Router line cards.
Contents
This publication contains the following sections:
•Important Information, page 2
•GRP, PRP, and Line Card Memory Overview, page 2
•Preparing for Installation, page 18
•Replacing and Upgrading Route Processor Route Memory, page 19
•Removing and Installing Line Card Memory, page 23
•Regulatory, Compliance, and Safety Information, page 34
•Obtaining Documentation, page 36
•Obtaining Technical Assistance, page 38
•Obtaining Additional Publications and Information, page 39

2
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
Important Information
Important Information
For Cisco 12000 Series Router route processor (RP) and line card removal and installation information,
refer to the installation and configuration publication for the hardware in use.
GRP, PRP, and Line Card Memory Overview
This section provides an overview of the memory systems on the GRP, PRP, and Cisco 12000 Series
Internet Router line cards.
GRP Memory
The GRP uses the following types of memory (see Figure 1 on page 4 for memory locations):
•Route memory—Dynamic random access memory (DRAM) enables an onboard processor to run
Cisco IOS software and store network routing tables. You can configure route memory from the
factory default of 128 MB to the maximum configuration of 512 MB.
Note GRP route memory configurations of 512 MB are only compatible with Product Number
GRP-B=. Cisco IOS Release 12.0(19)S or 12.0(19)ST or later, and ROMMON Release 11.2
(181) or later, are also required.
•GRP Flash memory—Single in-line memory module (SIMM) stores the boot helper software that
enables you to boot the router when a valid Cisco IOS software image is not available on a Flash
memory card.
•GRP linear Flash memory card—A convenient, offline medium for storing a copy of the default
Cisco IOS software image. This card can be inserted into either of the two Flash memory slots on
the GRP, so that you can load router software into GRP main memory.
•GRP erasable programmable read-only memory (EPROM)—Contains a ROM monitor that enables
you to boot the default Cisco IOS software image from a Flash memory card if the Flash memory
SIMM does not contain a boot helper image.
•GRP Random access memory—Nonvolatile random-access memory (NVRAM) provides a stable
medium for storing the router’s configuration files, the environmental monitoring logs, and the
contents of the router’s virtual configuration register.
PRP Memory
The PRP uses the following types of memory. (See Figure 2 on page 6 for memory locations):
•Route memory—Synchronous dynamic random access memory (SDRAM) enables an onboard
processor to run Cisco IOS software and store network routing tables. You can configure route
memory from the factory default of 512 MB to the maximum configuration of 2 GB.
•PRP onboard Flash memory—Single in-line memory module (SIMM) stores the boot helper
software to boot the router when a valid Cisco IOS software image is not available on a Flash disk
or a linear Flash memory card.

3
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
•PRP Flash disk—A convenient, offline medium for storing a copy of the default Cisco IOS software
image. The Flash disk can be inserted into either of the two Flash disk slots in the PRP, so that you
can load router software into PRP main memory.
•PRP erasable programmable read-only memory (EPROM)—Contains a ROM monitor that enables
you to boot the default Cisco IOS software image from a Flash disk if the Flash memory SIMM does
not contain a boot helper image.
•PRP Random access memory—Nonvolatile random-access memory (NVRAM) provides a stable
medium for storing the router’s configuration files, the environmental monitoring logs, and the
contents of the router’s virtual configuration register.
Line Card Memory
Cisco 12000 Series Router line cards use the following types of memory:
•Route memory—Dynamic random access memory (DRAM) or small outline DIMM (SODIMM)
memory enables an onboard processor to run Cisco IOS software and store network routing tables.
•Packet memory—Synchronous dynamic random access memory (SDRAM) is arranged in banks of
SDRAM (see Figure 3 on page 8 and Figure 4 on page 9) and consists of a set of receive (RX) and
transmit (TX) buffers that help to manage the flow of packet data into and out of the line card.
Memory Considerations
Consider the following to ensure proper memory configurations:
•Packet memory options and functions apply only to line cards. There is no packet memory on the
GRP and PRP. Different line cards support different default and maximum packet memory
configurations. Line card memory configurations are determined by their engine type. See Table 6
on page 15 for more information.
•Of the various types of memory used on the GRP, PRP, and line cards, only two types of memory
are field serviceable (that is, memory that can be replaced in the field): DRAM and SDRAM route
memory (GRP, PRP, and line cards) and SDRAM packet memory (certain line cards only).
GRP Route Memory
The processor on the GRP uses onboard DRAM to perform several tasks for Cisco 12000 Series
Internet Routers, including the following:
•Running the Cisco IOS software image
•Storing and maintaining the network routing tables
•Loading the Cisco IOS software image into installed line cards
•Formatting and distributing updated routing tables to installed line cards
•Monitoring temperature and voltage alarm conditions of installed cards and shutting them down
when necessary
•Supporting a console port that enables you to configure the router using an attached terminal
•Participating in network routing protocols (together with other routers in the networking
environment) to update the router’s internal routing tables

4
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Figure 1 shows the locations of the processor memory DRAM DIMM sockets and the Flash memory
SIMM socket on the GRP.
The two route memory DIMM sockets on the GRP, labeled U39 (route memory bank 1) and U42 (route
memory bank 2), respectively, enable you to configure route memory in desired increments ranging from
128 to 512 MB.
Note GRP route memory configurations of 512 MB are only compatible with Product Number
GRP-B=. Cisco IOS Release 12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2
(181) or later are also required.
Table 1 lists the available route memory configurations and associated product numbers for the GRP. The
default route memory configuration is 128 MB. If the GRP is currently equipped with one 64-MB DIMM
in socket U39, you can upgrade memory by installing a second 64-MB DIMM in socket U42, or by
removing the existing 64-MB DIMM and replacing it with one 128-MB DIMM.
Figure 1 Memory Locations on the Cisco 12000 Series Router GRP
Backplane connector
SLOT
-0
GIGABIT ROUTE PROCESSOR
SLOT
-1
COLL
LINK
TX
RX
RJ-45
MII
RESET
AUX
EJECT
H10547
Bank 2
DRAM DIMMs
Bank 1
PCMCIA slots
slot 0: bottom
slot 1: top
Console port
Ethernet
interface
(RJ-45 or MII)
Alphanumeric
LED displays
Auxiliary port
Flash
SIMM
U17
U42
U39

5
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Note If your system includes redundant GRPs, both GRPs should have the same memory size. Redundancy is
not supported when using a GRP and a Performance Route Processor (PRP) in the same chassis. Refer
to the Route Processor Redundancy Plus for the Cisco 12000 Series Router publication for more
information.
PRP Route Memory
The processor on the PRP uses onboard SDRAM to perform several tasks for Cisco 12000 Series
Internet Routers, including the following:
•Running the Cisco IOS software image
•Storing and maintaining the network routing tables
•Loading the Cisco IOS software image into installed line cards
•Formatting and distributing updated routing tables to installed line cards
•Monitoring temperature and voltage alarm conditions of installed cards and shutting them down
when necessary
•Supporting a console port that enables you to configure the router using an attached terminal
•Participating in network routing protocols (together with other routers in the networking
environment) to update the router’s internal routing tables
Table 1 Route Memory Configurations Available for Cisco 12000 Series Router GRP
Total Route Memory
Ordered1
1. Do not mix memory sizes. If installing 2 DIMMs, both DIMMs must be the same size.
Cisco Product Number DIMM Modules DRAM DIMM Sockets
64 MB MEM-GRP/LC-64=2
2. For GRPs equipped with 64 MB, this option adds a second 64-MB DIMM for a total of 128 MB.
1 64-MB DIMM U39 or U42
128 MB MEM-GRP/LC-128= 1 128-MB DIMM U39
256 MB MEM-GRP/LC-256=3
3. This product is no longer available. Replace it with Cisco Product Number MEM-GRP-256.
2 128-MB DIMMs U39 and U42
256 MB MEM-GRP-256=4
4. Only compatible with Product Number GRP-B=.
1 256-MB DIMM U39
512 MB MEM-GRP-512=5
5. GRP route memory configurations of 512 MB are only compatible with Product Number GRP-B=. Cisco IOS Release
12.0(19)S or 12.0(19)ST or later and ROMMON Release 11.2 (181) or later are also required
2 256-MB DIMMs U39 and U42

6
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Figure 2 shows the locations of the processor memory SDRAM DIMM sockets and the Flash memory
SIMM socket on the PRP.
Figure 2 Memory Locations on the Cisco 12000 Series Router PRP
The two route memory DIMM sockets on the PRP, labeled U15 (route memory bank 1) and U18 (route
memory bank 2), respectively, enable you to configure route memory in desired increments ranging from
512 MB to 2 GB.
1Backplane connector 6Ethernet ports
2Flash SIMM (Socket number P3) 7Auxiliary port
3
SDRAM DIMMs
Bank 1 - Socket number U15
Bank 2 - Socket number U18 8
Console port
4Ejector lever 9Handle
5Flash disk slots (covered) 10 Display LEDs
EJECT
RX
TX
PRIMARY
SLOT-1
SLOT-0
LINK
EN
RX
TX
ETH 1ETH 0 AUX CONSOLE
PERFORMANCE ROUTE PROCESSOR 1 (PRP-1)
LINK
PRIMARY
EN
RESET
75042
2
4
1
5 7 8 109
6
3

7
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Table 2 lists the available route memory configurations and associated product numbers for the
Cisco 12000 Series Router PRP.
Note If your system includes redundant PRPs, both PRPs should have the same memory size. Redundancy is
not supported when using a GRP and a PRP in the same chassis. Cisco strongly recommends that you
avoid configuring your router using mixed route processor cards. Refer to the Route Processor
Redundancy Plus for the Cisco 12000 Series Router publication for more redundancy information.
Line Card Memory
There are two types of user-configurable line card memory on most line cards:
•Route or processor memory
•Packet memory
Line card memory configurations and memory socket locations differ, depending on the type of line card.
In general, all line cards share a common set of memory configuration options for route memory, but
support packet memory differently. For clarity in describing how to remove and install memory in this
publication, line cards fall into the following groups, based on certain physical characteristics:
•Engine 0 and Engine 1 line cards (See Figure 3.)
•Engine 2 line cards (See Figure 4.)
•Internet Service Engine (ISE), formerly known as Engine 3 line cards (See Figure 5.)
•Engine 4 and Engine 4+ line cards (See Figure 6.)
Note The procedures for replacing memory on both the Engine 4 and the Engine 4+ line cards is
identical.
Table 2 Route Memory Configurations Available for Cisco 12000 Series Router PRP
Total Route Memory1
1. Do not mix memory sizes. If installing 2 DIMMs, both DIMMs must be the same size.
Cisco Product Number DIMM Modules
SDRAM DIMM
Sockets2
2. Default SDRAM configuration is 512 MB. Bank 1 (U15) must be populated first. You can use one or both banks to configure
SDRAM combinations of 512 MB, 1 GB, or 2 GB. 1.5 GB configurations are not supported.
512 MB3
3. One 512-MB DIMM is the default shipping configuration.
— 1 512-MB DIMM U15
1 GB MEM-PRP-512=4
4. Upgrades PRP to 1 GB by adding a second 512-MB DIMM.
2 512-MB DIMMs U15 and U18
1 GB MEM-PRP-1G= 1 1-GB DIMM U15
1.5 GB5
5. This memory size is not supported.
———
2 GB 2MEM-PRP-1G= 2 1-GB DIMMs U15 and U18

8
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
The general characteristics that determine which engine type a line card belongs to are as follows:
•Location of memory module sockets on the line card
•Number and function of memory module sockets
•Type of memory module sockets
Engine 0 and Engine 1 Line Card Memory Locations
Figure 3 shows the dual in-line memory module (DIMM) socket locations on an Engine 0 or Engine 1
line card. This line card is equipped with six DIMM sockets:
•Two route memory DIMM sockets
•Two pairs of packet memory DIMM sockets (RX and TX pairs)
Figure 3 Engine 0 and Engine 1 Line Card Memory Locations
1Route memory DIMM0 4Packet memory RX DIMM1
2Route memory DIMM1 5Packet memory TX DIMM0
3Packet memory RX DIMM0 6Packet memory TX DIMM1
ACTIVE
0
CARRIER
RX PKT
ACTIVE
1
CARRIER
RX PKT
Q OC-3/STM-POS
93275
2
1
5
6
3
4

9
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Engine 2 Line Card Memory Locations
Figure 4 shows the DIMM socket locations on an Engine 2 line card. This line card is equipped with
eight DIMM sockets:
•Two route memory DIMM sockets
•Two pairs of packet memory DIMM sockets (RX and TX pairs)
•One pointer look-up (PLU) memory DIMM socket (not user serviceable)
•One table look-up (TLU) memory DIMM socket (not user serviceable)
Figure 4 Engine 2 Line Card Memory Locations
ISE Line Card Memory Locations
Figure 5 shows the small outline DIMM (SODIMM) socket locations on an ISE line card. This line card
is equipped with 10 SODIMM sockets:
•Two route memory SODIMM sockets
•Four packet memory sockets (not user serviceable)
•Four TLU/PLU memory sockets (not user serviceable)
1Route memory DIMM0 5Packet memory RX DIMM0
2Route memory DIMM1 6Packet memory RX DIMM1
3Packet memory TX DIMM0 7PLU DIMM (not user serviceable)
4Packet memory TX DIMM1 8TLU DIMM (not user serviceable)
OC-48/POS-SR-SC
ACTIVE
0
CARRIER
RX PKT
TX RX
93276
2
1
6
78
5
3
4

10
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Figure 5 ISE Line Card Memory Locations
1Route memory SODIMM0 3Four packet memory SODIMM sockets (not field serviceable)
2Route memory SODIMM1 4Four TLU/PLU memory SODIMM sockets (not field
serviceable)
B
TX RX
RX PKT
CARRIER
ACTIVE
WRAP
PASSTHRU
A
TX RX
RX PKT
CARRIER
ACTIVE
WRAP
PASSTHRU
B
TX RX
RX PKT
CARRIER
ACTIVE
WRAP
PASSTHRU
A
TX RX
CLEAN
CONNECTOR
WITHALCOHOL
WIPESBEFORE
CONNECTING
CLASS 1 LASER PRODUCT
LASERPRODUKT DERKLASSE1
PRODUIT LASERDECLASSE1
PRODUCTO LASER DE CLASSE 1
1
0
4OC12X/SRP-IR-LC
RX PKT
CARRIER
ACTIVE
WRAP
PASSTHRU
84998
1
2
3
3
4
4

11
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
There are two route memory sockets on ISE (Engine 3) line cards that support the addition of route
memory in cards. Table 3 describes the various memory upgrade options.
Verifying Memory Installation
To determine whether you have two 256-Mbyte memory modules installed or one 512-Mbyte memory
module installed, attach to the line card and use the show hardware command. The DRAM DIMM
information is indicated in bold in the following example:
Router# attach 3
Entering Console for 4 Port GigabitEthernet in Slot: 3
Type exit to end this session
Press RETURN to get started!
LC-Slot3# show hardware
Cisco Internetwork Operating System Software IOS (tm) GS Software (GLC1-LC-M),
Experimental Version
12.0(20050203:211853) [samson-1g_cli_ci 144] Copyright (c) 1986-2005 by cisco Systems,
Inc.
Compiled Wed 16-Feb-05 13:17 by samson
Image text-base: 0x40010FC8, data-base: 0x41400000
ROM: System Bootstrap, Version 12.0(20030207:104405) [jkuzma-rommon 1.8] RELEASE SOFTWARE
LC-Slot3 uptime is 5 minutes
Running default software
cisco GE-4 (R7000) processor (revision 0x02) with 524289K bytes of memory.
R7000 CPU at 400Mhz, Implementation 39, Rev 3.3, 256KB L2 Cache Last reset from power-on
Table 3 ISE/Engine 3 Line Card Memory Upgrade Options
Line Card Current Configuration Memory Upgrade
Quad OC-12c/STM-4c ATM
Quad OC-3c/STM-1c ATM
•Two 256 MB
memory modules
•One 512 MB
memory module
•No memory upgrade option
available.1
•Upgrade to 1 GB by installing a
second 512 MB memory module.2, 3
1. Memory in SODIMM0 is not user serviceable on Engine 3 ATM line cards.
Quad OC-12/STM-4 SRP •N/A •Does not support 1 GB memory
upgrade.
All other ISE Engine 3 line cards •Two 128 MB
memory modules
•Two 256 MB
memory modules
•One 512 MB
memory module
•Upgrade to 512 MB by installing
two 256 MB memory modules.2
•Upgrade to 512 MB by installing
one 512 MB memory module.3
•Upgrade to 1 GB by installing two
512 MB memory modules.2,3
•Upgrade to 1 GB by installing a
second 512 MB memory module.2, 3
2. Do not mix memory sizes. Both DIMMs must be the same size memory.
3. Requires Cisco IOS Release 12.0(31)S or later, and you must upgrade the route processor ROMMON code to Version later
than 1.3 before installing the upgraded memory.

12
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
4 GigabitEthernet/IEEE 802.3 interface(s)
DRAM DIMM Slot 1: 256M found, Slot 2: 256M found
Configuration register is 0x0
In this example, two 256-Mbyte memory modules are installed and therefore the memory is not user
upgradable.
Engine 4 Line Card Memory Locations
Figure 6 shows the DIMM socket locations on an Engine 4 line card. These line cards are equipped with
five DIMM sockets:
•One route memory small-outline DIMM (SODIMM) socket
•Two pairs of packet memory DIMM sockets (not user serviceable)
The route memory module is installed to a 144-pin SODIMM socket. Route memory runs the Cisco IOS
software image and stores the updated network routing tables downloaded from the route processor.
Figure 6 Engine 4 Line Card Memory Locations
Note Engine 4 and Engine 4+ line cards may have a different route memory DIMM socket identifier than the
Cisco OC-192c line card shown in Figure 6. For example, the route memory module on the Cisco Quad
OC-48c line card is in the J12 socket.
Line Card Route Memory
Route memory is line card DRAM that runs the Cisco IOS software image and stores the updated
network routing tables downloaded from the GRP. Line card route memory ranges from 128 to 512 MB.
1Route memory SODIMM 2Packet memory DIMMs (not user serviceable)
CLASS 1 LASER PRODUCT
LASERPRODUKTDERKLASSE 1
PRODUIT LASERDECLASSE1
PRODUCTO LASER DE CLASSE 1
TX RXMA
TE
ACTIVE
CARRIER
RX PKT
SYNC
PASS THRU
WRAP
OC192/SRP-SR-SC
CLEAN
CONNECTOR
WITHALCOHOL
WIPESBEFORE
CONNECTING
93274
1
2
2

13
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Table 4 lists the available route memory configurations and associated product numbers of DRAM
DIMMs for upgrading route memory on the Cisco 12000 Series Router line cards.
Line Card Packet Memory
Line card packet memory temporarily stores data packets awaiting switching decisions by the line card
processor. Once the line card processor makes the switching decisions, the packets are propagated into
the router’s switch fabric for transmission to the appropriate line card.
•Engine 0 and Engine 1 line cards (see Figure 3) include four SDRAM DIMM sockets for packet
memory, paired as follows:
– Receive (RX) buffer—Two SDRAM DIMM sockets labeled RX DIMM0 and RX DIMM1
– Transmit (TX) buffer—Two SDRAM DIMM sockets labeled TX DIMM0 and TX DIMM1
•Engine 2 line cards (see Figure 4) include four SDRAM DIMM sockets for packet memory, paired
as follows:
– Transmit (TX) buffer—Two SDRAM DIMM sockets labeled TX DIMM0 and TX DIMM1
– Receive (RX) buffer—Two SDRAM DIMM sockets labeled RX DIMM0 and RX DIMM1
•ISE line cards (see Figure 5) include four SODIMM sockets for packet memory. This memory is not
field serviceable.
•Engine 4 and Engine 4+ line cards (see Figure 6) include two DDR DIMM sockets for packet
memory. This memory is not field serviceable.
Table 4 Route Memory Configurations for Cisco 12000 Series Line Cards
Total Route Memory
Ordered Cisco Product Number DIMM Module
Route Memory
DIMM Sockets Engine
64 MB MEM-GRP/LC-64=1
1. This option adds a second 64-MB DIMM for a total of 128 MB for line cards that are equipped with 64 MB.
1 64-MB DIMM DIMM0 or DIMM1 E0, E1, E2
128 MB MEM-DFT-GRP/LC-1282
2. Standard (default) DRAM DIMM configuration for the processor on E0, E1, or E2 line cards is 128 MB.
1 128-MB DIMM DIMM0 or DIMM1 E0, E1, E2
128 MB MEM-GRP/LC-128=3
3. This option allows the customer to order a spare module or add a second 128-MB DIMM for a total of 256 MB for line cards that are already equipped
with one 128 MB DIMM.
1 128-MB DIMM DIMM0 or DIMM1 E0, E1, E2
256 MB MEM-GRP/LC-256= 2 128-MB DIMMs DIMM0 and DIMM1 E0, E1, E2
256 MB N/A - Default Config. 1 256-MB SODIMM4
4. A 144-pin SODIMM module is used.
J15–OC-192
J12–Quad OC-48
E4, E4+
256 MB MEM-LC-ISE-256= 2 128-MB SODIMM DIMM0 and DIMM1 E3 (ISE only)
512 MB MEM-LC-ISE-512=5
5. The default memory on ISE line cards is 512-MB. This is provided as either 2 256-MB SODIMMs or 1 512-MB SODIMM.
2 256-MB SODIMM DIMM0 and DIMM1 E3 (ISE only)
512 MB MEM-LC-ISE-512A= 1 512-MB SODIMM DIMM06
6. The spare 512-MB SODIMM in the ATM ISE line cards can only be installed in SODIMM1. The memory in SODIMM0 is not user replaceable.
E3 (ISE only)
1 GB MEM-LC-ISE-1G= 2 512-MB SODIMM DIMM0 and DIMM1 E3 (ISE only)

14
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Note For a line card to operate, both receive packet memory DIMM sockets and both transmit packet memory
DIMM sockets must be populated. The SDRAM DIMMs installed in a given buffer (either receive or
transmit) must be the same type and size, but receive and transmit buffers can operate with different
memory sizes.
Table 5 lists the available packet memory configuration options for Cisco 12000 Series Router line
cards. Cisco packet memory configuration options consist of four DIMMs of the same type and size (two
DIMMs for the RX socket pair and two DIMMs for the TX socket pair). The actual default and maximum
packet memory configuration options depend on the type of line card. Table 6 on page 15 lists engine
types for each available Cisco 12000 Series Router line card.
Table 5 Packet Memory Configurations for Cisco 12000 Series Router Line Cards
Engine Number
Total Packet
Memory1
1. The SDRAM DIMMs installed in a given buffer (either receive or transmit) must be the same type and size, but receive and
transmit buffers can operate with different memory capacities.
DIMM Modules Cisco Product Number
Engine 0
(200-pin DIMMs)
128 MB
(replacement)
not upgradeable
2 RX 32-MB DIMMs
2 TX 32-MB DIMMs
MEM-LC-PKT-128=
Engine 1
(168-pin DIMMs)
256 MB
(replacement)
not upgradeable
2 RX 64-MB DIMMs
2 TX 64-MB DIMMs
MEM-LC1-PKT-256=
Engine 2
(168-pin DIMMS)
256 MB
(replacement)
512 MB (upgrade)
2 RX 64-MB DIMMs
2 TX 64-MB DIMMs
or
2 RX 128-MB DIMMs
2 TX 128-MB DIMMs
MEM-LC1-PKT-256=
MEM-PKT-512-UPG=
ISE2
(144-pin SODIMMs)
2. The packet memory on this line card engine type is not field serviceable.
512 MB 2 RX 128-MB SODIMMs
2 TX 128-MB SODIMMs
—
Engine 4 and Engine 4+2
(278-pin DDR DIMMs)
512 MB 2 RX 128-MB DDR
DIMMs
2 TX 128-MB DDR
DIMMs
—

15
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
Cisco 12000 Line Card Engine Types
Table 6 lists Cisco 12000 Series Router line cards and their engine types.
Note Additional line cards continue to be released for Cisco 12000 Series Routers. This list might not include
the latest released line cards. Check the installation and configuration note that came with your line card
to verify the engine type.
.Table 6 Line Card Packet Memory Configuration Options
Line Card Type and Name Cisco Product Number Engine Type
Asynchronous Transfer Mode (ATM)
8-Port OC-3 STM-1 ATM 8OC03/ATM/TS-IR-B=
8OC03/ATM/TS-MM-B=
Engine 2
OC-12c/STM-4c ATM LC-1OC12/ATM-SM=
LC-1OC12/ATM-MM=
Engine 0
Quad OC-3c/STM-1c ATM 4OC3/ATM-IR-SC=
4OC3/ATM-MM-SC=
Engine 0
Quad OC-12c/STM-4c ATM 4OC12X/ATM-IR-SC=
4OC12X/ATM-MM-SC=
Engine 3
Quad OC-12c/STM-4c ATM/IP 4OC12/ATM-IR-IP=
4OC12/ATM-MM-IP=
Engine 3
CHANNELIZED and Digital Signal (DS)
2-port STM-1/OC-3 Channelized
E1/T1
2CHOC3/STM1-IR-SC= Engine 0
4-Port Channelized OC-12/STM-4
POS/SDH ISE
4CHOC12/DS3-I-SCB= ISE
6CT3-SMB 6CT3-SMB= Engine 0
6-Port DS3
12-Port DS3
6DS3-SMB=
6DS3-SMB-B=
12DS3-SMB=
12DS3-SMB-B=
Engine 0
6E3-SMB
12E3-SMB
6E3-SMB=
12E3-SMB=
Engine 0
Channelized OC-12 to DS3 LC-OC12-DS3= Engine 0
Channelized OC-12/STM-4 IR-SC
STS3/STM1
CHOC12/STS3-IR-SC= Engine 0
Channelized OC-48/STM-1 POS/SDH
ISE
CHOC48/DS3-SR-SC= ISE
Ethernet
1-Port 10-Gigabit Ethernet 1X10GE-LR-SC= Engine 4+
3-Port Gigabit Ethernet 3GE-GBIC-SC= Engine 2
4-Port Gigabit Ethernet ISE 4GE-SFP-LC= ISE

16
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
8-Port Fast Ethernet 8FE-FX-SC=
8FE-TX-RJ45=
8FE-FX-SC-B=
8FE-TX-RJ45-B=
Engine 1
10-Port 1-Gigabit Ethernet 10X1GE-SFP-LC =
10X1GE-SFP-LC-B=
Engine 4
10-Port 1-Gigabit Ethernet LR -LR= Engine 4+
Gigabit Ethernet GE-SX/LH-SC=
GE-GBIC-SC-B=
Engine 1
Modular Gigabit Ethernet Engine 4+
Packet-over-SONET (POS)
4-Port OC-12c/STM-4c POS/SDH ISE 4OC12X/POS-I-SC-B=
4OC12X/POS-M-SC-B=
ISE
8xOC3 POS or 16xOC3 POS 8OC3/POS-MM=
8OC3/POS-SM==
16OC3/POS-MM=
16OC3/POS-SM=
Engine 2
OC-3c/STM-1c POS/SDH ISE 4OC3X/POS-IR-LC-B=
4OC3X/POS-MM-MJ-B=
4OC3X/POS-LR-LC-B=
8OC3X/POS-IR-LC-B=
8OC3X/POS-MM-MJ-B=
16OC3X/POS-I-LC-B=
16OC3X/POS-M-MJ-B=
ISE
OC-12c/STM-4c POS LC-1OC12/POS-SM=
LC-1OC12/POS-MM=
Engine 0
Enhanced OC-48c/STM-16c POS OC48E/POS-1550-SC=
OC48E/POS-1550-FC=
OC48E/POS-SR-SC=
OC48E/POS-SR-FC=
OC48E/POS-LR-SC-B=
OC48E/POS-LR-FC-B=
OC48E/POS-SR-SC-B=
OC48E/POS-SR-FC-B=
Engine 2
OC-48c/STM-16 POS
Note Most users deploy the enhanced
OC-48c/STM-16c line card.
This is the non-enhanced
version.
OC48/POS-SR-SC=
OC48/POS-SR-FC=
Engine 1
OC-48/STM-16 POS/SDH ISE OC48X/POS-LR-SC=
OC48X/POS-SR-SC=
ISE
OC-192c/STM-64c POS Enabler OC192/POS-SR= Engine 2
Table 6 Line Card Packet Memory Configuration Options (continued)
Line Card Type and Name Cisco Product Number Engine Type

17
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
GRP, PRP, and Line Card Memory Overview
OC-192c/STM-64c POS OC192/POS-VSR=
OC192/POS-SR-SC=
OC192/POS-IR-SC=
OC192E/POS-VSR=
OC192E/POS-SR-SC=
OC192E/POS-IR-SC=
OC192/POS-LR=
Engine 4
Engine 4+
Quad OC-3c/STM-1c POS LC-4OC3/POS-SM=
LC-4OC3/POS-MM=
4OC3/POS-LR-SC=
Engine 0
Enhanced QOC-12c/STM-4c Layer 3
POS
4OC12E/POS-IR-SC=
4OC12E/POS-MM-SC=
Engine 2
QOC-12c/STM-4c Layer 3 POS
Note Most users currently deploy the
enhanced QOC-12c/STM4c
line card. This line card is the
non-enhanced version.
4OC12/POS-IR-SC=
4OC12/POS-MM-SC=
Engine 2
Quad OC-48c/STM-16c POS 4OC48/POS-SR-SC=
4OC48/POS-SR-FC=
4OC48/POS-LR-SC=
4OC48/POS-LR-FC=
4OC48E/POS-SR-SC=
4OC48E/POS-LR-SC=
Engine 4
Engine 4+
Dynamic Packet Transport (DPT)/
Spatial Reuse Protocol (SRP)
2OC-12/STM-4 SRP OC12/SRP-MM-SC-B=
OC12/SRP-IR-SC-B=
OC12/SRP-LR-SC-B=
OC12/SRP-XR-SC=
Engine 1
1OC-48/STM-16 SRP OC48/SRP-SR-SC-B=
OC48/SRP-LR-SC-B=
Engine 2
Quad OC-12/STM-4 SRP 4OC12X/SRP-IR-LC=
4OC12X/SRP-XR-LC=
Engine 3
Quad OC-48/STM-16 SRP 4OC48/SRP-SFP Engine 4+
1OC-192/STM-64 OC192/STM-IR
OC192/STM-SR
OC192/STM-VSR
Engine 4+
Table 6 Line Card Packet Memory Configuration Options (continued)
Line Card Type and Name Cisco Product Number Engine Type

18
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
Preparing for Installation
Preparing for Installation
Installation preparation is presented in the following sections:
•Safety Guidelines
•Preventing Electrostatic Discharge
•Required Tools and Equipment
Safety Guidelines
Before you perform any procedure in this publication, review the safety guidelines in this section to
avoid injuring yourself or damaging the equipment.
The following guidelines are for your safety and to protect equipment. The guidelines do not include all
hazards. Be alert.
Note Review the safety warnings listed in the Regulatory Compliance and Safety Information for
Cisco 12000 Series Internet Routers publication (Document Number 78-4347-xx) that accompanied
your router before installing, configuring, or maintaining a line card or its components.
•Keep the work area clear and dust free during and after installation. Do not allow dirt or debris to
enter into any components.
•Do not wear loose clothing, jewelry, or other items that could get caught in the router while working
with line cards or components.
•Cisco equipment operates safely when it is used in accordance with its specifications and product
usage instructions.
Preventing Electrostatic Discharge
Electrostatic discharge (ESD) damage, which can occur when electronic cards or components are
improperly handled, results in complete or intermittent failures. Electromagnetic interference (EMI)
shielding is an integral component of the line card. Cisco recommends using an ESD-preventive strap
whenever you are handling network equipment or one of its components.
The following are guidelines for preventing ESD damage:
•Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact.
Connect the equipment end of the connection cord to an ESD connection socket on the router or to
bare metal on the chassis.
•Handle line cards by the captive installation screws, the provided handle, ejector levers, or the line
card metal carrier only; avoid touching the board or connector pins.
•Place a removed line card board-side-up on an antistatic surface or in a static shielding bag. If you
plan to return the component to the factory, immediately place it in a static shielding bag.
•Avoid contact between the line card and clothing. The wrist strap only protects the board from ESD
voltages on the body; ESD voltages on clothing can still cause damage.

19
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
Replacing and Upgrading Route Processor Route Memory
Required Tools and Equipment
You will need the following tools and parts to install or replace memory on the Cisco 12000 Series
Router GRP, PRP, or line cards:
•Flat-blade or Number 2 Phillips screwdriver.
Some early models of the GRP and line cards are equipped with slotted-head captive screws that
fasten the card in the card cage. Later models of the GRP, PRP, and line cards are equipped with
combination-head captive screws, which can take either a flat-bladed screwdriver or a Phillips
screwdriver.
•Your own ESD-prevention equipment or the disposable grounding wrist strap included with all
upgrade kits, field-replaceable units (FRUs), and spares for the Cisco 12000 Series Routers.
•Antistatic mat or surface.
•The DIMM modules for configuring the GRP, PRP, or line card memory (for the GRP, see Table 1;
for the PRP see Table 2; for line cards, see Table 4 and Table 6).
Replacing and Upgrading Route Processor Route Memory
This section describes how to replace or upgrade the route memory DRAM DIMMs on the GRP and the
SDRAM DIMMs on the PRP. Unless otherwise stated, throughout the remainder of this publication the
GRP and the PRP are called an RP.
Note If the router is equipped with a single RP, you must power down the router before removing the RP to
replace or upgrade processor memory DIMMs on the RP. If the router is equipped with an optional,
redundant RP, you can remove one of the RPs while the router is running without affecting router
operation. Redundant RPs should both have the same memory size.
This section contains the following procedures:
•Removing Route Memory DIMMs from an RP
•Installing Route Memory DIMMs on an RP
•Checking the Installation of RP Memory
If you are upgrading memory by adding a matching DIMM to an existing single-DIMM configuration,
use the procedure in the “Installing Route Memory DIMMs on an RP” section on page 21.
If you are replacing a defective DIMM or performing a memory upgrade that requires the existing
DIMMs to be removed, you must first remove the existing DIMMs. In that case, use the procedure in the
“Removing Route Memory DIMMs from an RP” section on page 20. After you have removed the DIMM
from the RP, proceed to the “Installing Route Memory DIMMs on an RP” section on page 21.

20
Cisco 12000 Series Router Memory Replacement Instructions
78-4338-16
Replacing and Upgrading Route Processor Route Memory
Removing Route Memory DIMMs from an RP
Review the following route memory removal scenarios:
•If you are upgrading the memory by adding a matching DIMM to an existing single-DIMM
configuration (only socket U39 occupied), use the procedure in the “Installing Route Memory
DIMMs on an RP” section on page 21. For example, if you want to upgrade memory from 64 MB
to 128 MB (two 64-MB DIMMs) or from 128 MB to 256 MB (two 128-MB DIMMs), you can install
the appropriate DIMM in socket U42.
•If you are replacing a defective DIMM or performing a memory upgrade that requires the existing
DIMMs to be removed, use the following procedure. For example, if you want to upgrade memory
from 64 MB to 128 MB (one 128-MB DIMM) or 256 MB (two 128-MB DIMMs), you must remove
the existing DIMM before installing the new DIMMs.
Note After removing processor memory DIMMs from the RP, place them in an antistatic bag for ESD
protection. Removed route memory DIMMs can be used in other compatible equipment.
To remove a DIMM from an RP, follow these steps:
Step 1 Attach an ESD-preventive wrist strap to your wrist and connect the leash to one of the ESD connection
sockets on the front of the chassis or to a bare metal surface on the chassis.
Step 2 Position the RP on the antistatic mat so that the faceplate is toward you and the backplane connector is
away from you.
Step 3 Locate the route memory DIMMs on the RP. (See Figure 1.) The DIMMs occupy U39 (bank 1) and U42
(bank 2).
Step 4 For the DIMM you want to remove, pull down the lever on the DIMM socket to release the DIMM from
the socket. (See Figure 7.)
Figure 7 Using the DIMM Socket’s Release Lever to Remove DIMMs
Caution Handle the edges of the DIMM only. (See Figure 8.) Do not touch the integrated circuit devices on the
DIMM, the metal traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket.
Step 5 When one end of the DIMM is released from the socket, grasp each end of the DIMM with your thumb
and forefinger and pull the DIMM completely out of the socket.
H6513